Improvement in holding daguerreotype-plates



UNITED l STATES PATENT CEFICE.

SAMUEL PECK, OF HAVEN, CONNECTICUT.

Specification forming part of LettersPatent No. 7,326, dated alpi-i130, 1850. A Y

To a/ZZ whom it may concern:

Be it known that I, SAMUEL` PEOR, of the` city and county of New Haven, and State of Connecticut, have invented a new and Improve nde of and Instrument for Holdingv Daguerreotype-Plates while the Plates are be` ing Polished, Burnished, or Buffed; and I do4 hereby declarevthat the following is a full, clear, and exact description'of the construction and operation of the same, reference being had to the accompanying drawings, which make a part of this specification, in which- Figure 1 is a perspective view of adaguerreotypeplate asprepared to be fastened on the holder. Fig. 2 is a perspectiveview of -the upper side of the holder on which the plate is to be placed. The holder is shownin two parts, Nos. 1 and 2, in the position it assumes whenthe pins at the holes d CZ are rernoved and the spiral springs e e are eX- tended. These pins are, however, never removed in actual use; but this position shows more completely all parts of the holder. Fig. 3 is a perspective View of the lower side or back of the holder in the position it assumes when a plate is fastened uponit to be polished, bulfed, dac. Fig. 4: is a cross-section'of the holder with the plate attached, the section being taken in the line o o of Fig. 3.

A section'of the plate hooking over the corner of the holder is shown by the red line 'i t', Fig. 4. One of the springs is seen at e, a section of the button at f, and the projection on which the button rests at h. y

'n 'n is a strip of brass let into'the corner of y i the holder to prevent wear by contact with' the daguerreotype-platef The daguerreotype-plate is first` prepared by bending over the edges toward the back from one-tenth to one-sixteenth of an inch, so as to forxn a catch, as shown in the-drawings, Figs. 1, 3, and-1, at i z'. This-bending of the edge of the plate' forms a catch for fastening 'it upon the holder and adds ltolthe strength 1 and stiffness of the plate itself.

The holder Iconstruct of wood, with a strip of brass let into and forming the upper corner, as shown at t' i, Fig. 2, so as to preventwear by contact with the plate. l The entire holder may be made of brassor any suitable metal. The construction and operation of the holder are shown in the drawings.

A. a, Fig. 2, are square tenons projecting from the part No. 1 and fitted so as to play b'ack and forth closely but freely in the grooves bbofNo.2.

C c are mortises cut through the tenons a a. For the purpose of connecting the parts 1 and grooveslb b, and pins passed through'the holes d d and the mortises c c, as seen inFig. 3. The length of the mortises regulates the lateral movement of the holder. y

E e are spiral springs resting at leach endin holes countersunk for thatpurpose, so as to press the holder open laterally till stopped (whenthe plate is off) by the pins through the mortises'in the tenons atd d. Vhen a plate is on theholder, as in Fig. "3, the pressure of the springs forces the holder open upon thebe'nt corners of the plate, which rest in "shown in- Figs 2 and 3 at This notch is 4cut so that the. edges ofthe plate hook into it when vthe plate is placed on'the holder.v

f, Fig. 3; represents a button, which works in a recess countersunk` in the back of the holder secured by a screw in the center. When the plate is placed on the holder in the position just described, secu-red by the outward so as to rest one end upon the recess in the back of the holder at y, Fig. 3, the-other upon the projection It. V lVhenthe button is. thus turned, the `plate is firmly fastened to the holder bythe outward pressure'of the springs 'forcing the edge of the plate into the notch, as shown aft QI t, Fig. 3, while' the holder is secured and prevented from being pressed t0-A `and the other at h." To take off the plate, it

. the two parts ot' the holdertogethew I use spiral springs', as shown in the drawings, as best to produce the outward pressure;

thesprings may be dispensed with and a block or wedge'insertedbetween the two parts ofthe holder.

'What 1 claim as my inventioinand Wish `tosecure by Letters Patent, si f 1. The construction of a movable holderfor securing daguerreotype f plates -by pressure 2 together the tenons o. a. are pressed into the l notches cut in the corners of the holders, as

pressure ofthe springs, the button f is turned get her bythe button resting one end ati/F' is onlv necessary to turn the button and'press butother than spiral springs may be-used, or

from Within outward while the plates vare being polished, burnished,`buffed,'or cleaned.. g 2. The 'construction vor arrangement of' av holder composed of. two parts, with springs between the parts pressing them from within outward against the bent edges or cuorners -of the daguerreotypeplate, and seeured'fmm contract-ion by a button or Wedge, substantially as in the drawings.

3. In combination with such holder, the bending of he edges 01 corners of the plate, so as to secure the same to this holder.

4. The adaptation of a daguerreotype-plate with its edges or corners bent, as shown in the drawings, tba movable holder constructed substantially as v.above described. Dated originally an New Haven this 25th day of February, A. D. 1850. Amended and redated this 13th dayof April, A. D. 1850. SAMUEL PECK.

In presence of- HENRY B. HARRlsoN,

LUCIUs G. PECK. 

